we upgraded our test system from 2.3.4 to 2.3.5-p1 on PHP 7.3. we use the out of the box inventory function with simple products. After the successful sale transaction the inventory count remains unchanged and is only reduced after we "ship" per backend admin.
This is wrong/buggy from my perspective as it opens the door to sell more than you have in stock and then be unable to satisfy customers. Any idea how to fix that? many thanks JR